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AISI 321H Stainless Steel vs. EN 1.6957 Steel

Both AISI 321H stainless steel and EN 1.6957 steel are iron alloys. They have 75% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
18
Fatigue Strength, MPa 200
530
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
46
Shear Modulus, GPa 77
73
Shear Strength, MPa 400
570
Tensile Strength: Ultimate (UTS), MPa 580
930
Tensile Strength: Yield (Proof), MPa 230
780

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
450
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
2.1
Embodied Energy, MJ/kg 46
29
Embodied Water, L/kg 140
60

Common Calculations

PREN (Pitting Resistance) 18
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
33
Strength to Weight: Bending, points 20
27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 12
27

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.22 to 0.32
Chromium (Cr), % 17 to 19
1.2 to 1.8
Iron (Fe), % 65.4 to 74
92.7 to 94.7
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 9.0 to 12
3.4 to 4.0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 0.75
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.0070
Titanium (Ti), % 0 to 0.7
0
Vanadium (V), % 0
0.050 to 0.15